LONDON -- In Friday's World Track and Field Championships' 1500 meters semifinal race consisting of Kenyan greats Asbel Kiprop and Elijah Manangou, native Staten Islander Robby Andrews seemed primed to make his move. But his body, specifically his calves, just wouldn't let him.

With a little more than a lap to go Andrews, the USATF Champion, pulled up, hobbled off to the inside of the track and fell to his knees, pounding his hands frustratingly to the ground.

In the early part of the race, Andrews seemed to be staying out of any potential early trouble, as he, along with the 3-time 1500 champion Kiprop, stayed at the back of the pack. As the leaders passed the first (62.54) and second laps (2:03.95) Andrews, known for his ferocious kick, attempted to move along with Kiprop.

But it was just not meant to be this time.

"I would have loved to have shown what I could have done in the final," Andrews told Johnson.

Manangou (3:40.10) and Kiprop finished 1-2 in the race to qualify for the final

For now, Andrews will most probably have to assess the seriousness of his injury and see if he'll continue to race this season in track meets in Europe. "It's been a great year," said Andrews. "I'll be back"

In the second semifinal race, Johnny Gregorek became the only American to qualify for Sunday's final.